#include "template1_lib.h"

//应用程序开发人员
class Application{
public:
    bool Step2() {
        //...
    }

    void Step4() {
        //...
    }
};

int main() {
    Library lib;
    Application app;

    lib.Step1();

    if (app.Step2()) {
        lib.Step3();
    }

    for (int i = 0; i < 4; i++) {
        app.Step4();
    }

    lib.Step5();

}
